Its at its best in a two-color deck, though three-color decks can make it work while your opponents have no idea what hit them
We can also see great cards be a victim of their format
You can pick your own adventure here, shifting around lore counters on sagas, messing with +1/+1 counters on amass creatures, or even tinkering with planeswalker loyalty counters
Cecil starts out as the black mana Dark Knight version
Planeswalkers lower the value of traditional card advantage outlets (because Planeswalkers can do that for you) and hinder traditional aggro (because Planeswalkers inflate life totals)
Many decks interested in wraths want to play blue anyway, and being uncounterable is way more relevant than preventing regeneration, since its mostly been phased out, and common protection spells use phasing or indestructible